电网技术2012，Vol.36Issue(10)：136-140,5.
基于区间模型和二阶摄动理论的低频振荡模态分析方法
Interval Model and Second Order Perturbation Theory-Based Modal Analysis of Power System Low-Frequency Oscillation
摘要
Abstract
In allusion to the difficulty of determining low-frequency oscillation modals under evident fluctuation of operational parameters of large-scale complex power grid, a method is proposed to analyze oscillation modals by interval models and complex modal second-order perturbation theory. Firstly, interval distribution models of frequency, damping and participating factors under uncertain information are built; then the variation of above-mentioned characteristic elements of system oscillation modals under wider varying intervals of operational parameters is estimated by complex modal second-order perturbation theory. Simulation results of IEEE 16-machine 68-bus system show that even though multi operational parameters of large-scale complex power grid vary evidently and simultaneously, the small signal stability performance of the system can be also estimated accurately by the proposed method and more overall information can be provided to operation personnal. Meanwhile, the results of analyzing low-frequency oscillation modals by the proposed method are more accurate than those by the first-order perturbation.关键词
低频振荡/模态分析/二阶摄动理论/区间理论Key words
low-frequency oscillation/ modal analysis/ second order perturbation theory/ interval theory分类
信息技术与安全科学引用本文复制引用
马静,王彤,彭明法,贾京华,王铁强,王增平,杨奇逊..基于区间模型和二阶摄动理论的低频振荡模态分析方法[J].电网技术,2012,36(10):136-140,5.基金项目
国家重点基础研究发展计划项目(973 项目)(2012CB215200) （973 项目）
国家自然科学基金项目(50907021,50837002) （50907021,50837002）
"111"引智计划(B08013) （B08013）
中央高校基本科研业务费专项资金项目(11MG01,09QX64) （11MG01,09QX64）
教育部留学回国人员科研启动基金资助项目(教外司留[2011]1139) （教外司留[2011]1139）
河北自然科学基金项目(E2012502034). （E2012502034）
